The Drop (Harry Bosch, #15; Harry Bosch Universe, #23)

In his fierce search for a new case, Detective Harry Bosch discovers a killer hiding behind suspicious DNA evidence -- and a political conspiracy that could destroy the Los Angeles Police Department.<br/><br/>DNA from a 1989 rape and murder matches a 29-year-old convicted rapist. Was he an eight-year-old killer or has something gone terribly wrong in the new Regional Crime Lab? The latter possibility could compromise all of the lab's DNA cases currently in court.<br/><br/>Then Bosch and his partner are called to a death scene fraught with internal politics. Councilman Irvin Irving's son jumped or was pushed from a window at the Chateau Marmont. Irving, Bosch's longtime nemesis, has demanded that Harry handle the investigation.<br/><br/>Relentlessly pursuing both cases, Bosch makes two chilling discoveries: a killer operating unknown in the city for as many as three decades, and a political conspiracy that goes back into the dark history of the police department.